"An Obsidian mystery."

"There's a dark cloud over Sunny Jim's Safety First Parasailing and Stand-Up Paddleboarding business on Florida's Riggs Beach--especially after one of his clients is killed in a tragic paddleboarding mishap. Sunny Jim is sure it was no accident, and he hires Helen and Phil to find the murderer. Between cutthroat competitors poaching his territory, the city threatening to revoke his license, a restaurant owner wanting his beach spot for a parking lot, and a wrongful death suit filed by the victim's husband, Sunny Jim may soon be up the creek without a paddle. But he does have Helen and Phil on his side, and as the couple start to investigate, they discover dark undercurrents of corruption behind the cheerful facades of the beachfront businesses, as well as domestic secrets. But the sands of time are running out, and if they don't catch the killer soon, Sunny Jim won't be the only one to go under..."--